name = '''
题目：
输入：n
要求：输出所有[0, n]内的偶数
'''
print(name)

def get_evens(n):
    ans = []
    i = ?
    while i ? n :
        ans.append(i)
        i = i + ?
    return tuple(ans)

print('Accept' if get_evens(1) == (0,) else 'Wrong Answer') # extra at here (0,) make it tuple
print('Accept' if get_evens(4) == (0,2,4) else 'Wrong Answer')
print('Accept' if get_evens(5) == (0,2,4) else 'Wrong Answer')
print('Accept' if get_evens(10) == (0,2,4,6,8,10) else 'Wrong Answer')
